I also continue to get this error (on Windows TurboTax Deluxe). I need to file a Form 7206, and I have ensured that my form is fully filled out in the app. I have attempted to submit multiple times, and always get the "R0000-058-01 - An XML document that represents a binary attachment must have a valid reference to an attached file" error.
In past attempts, the app told me to wait and re-submit later. This latest time however the app has told me that I must submit my returns manually (in Check e-File Status, Help Me Fix It: "This return cannot be electronically processed. To file this return, print and mail it to the IRS Service Center").
Intuit, are you really no longer trying to solve this problem?
